src/processes.c

   1 /**
   2  * collectd - src/processes.c
   3  * Copyright (C) 2005  Lyonel Vincent
   4  * Copyright (C) 2006-2008  Florian Forster (Mach code)
   5  * Copyright (C) 2008  Oleg King
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the
   9  * Free Software Foundation; either version 2 of the License, or (at your
  10  * option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  20  *
  21  * Authors:
  22  *   Lyonel Vincent <lyonel at ezix.org>
  23  *   Florian octo Forster <octo at verplant.org>
  24  *   Oleg King <king2 at kaluga.ru>
  25  *   Sebastian Harl <sh at tokkee.org>
  26  **/
  27
  28 #include "collectd.h"
  29 #include "common.h"
  30 #include "plugin.h"
  31 #include "configfile.h"
  32
  33 /* Include header files for the mach system, if they exist.. */
  34 #if HAVE_THREAD_INFO
  35 #  if HAVE_MACH_MACH_INIT_H
  36 #    include <mach/mach_init.h>
  37 #  endif
  38 #  if HAVE_MACH_HOST_PRIV_H
  39 #    include <mach/host_priv.h>
  40 #  endif
  41 #  if HAVE_MACH_MACH_ERROR_H
  42 #    include <mach/mach_error.h>
  43 #  endif
  44 #  if HAVE_MACH_MACH_HOST_H
  45 #    include <mach/mach_host.h>
  46 #  endif
  47 #  if HAVE_MACH_MACH_PORT_H
  48 #    include <mach/mach_port.h>
  49 #  endif
  50 #  if HAVE_MACH_MACH_TYPES_H
  51 #    include <mach/mach_types.h>
  52 #  endif
  53 #  if HAVE_MACH_MESSAGE_H
  54 #    include <mach/message.h>
  55 #  endif
  56 #  if HAVE_MACH_PROCESSOR_SET_H
  57 #    include <mach/processor_set.h>
  58 #  endif
  59 #  if HAVE_MACH_TASK_H
  60 #    include <mach/task.h>
  61 #  endif
  62 #  if HAVE_MACH_THREAD_ACT_H
  63 #    include <mach/thread_act.h>
  64 #  endif
  65 #  if HAVE_MACH_VM_REGION_H
  66 #    include <mach/vm_region.h>
  67 #  endif
  68 #  if HAVE_MACH_VM_MAP_H
  69 #    include <mach/vm_map.h>
  70 #  endif
  71 #  if HAVE_MACH_VM_PROT_H
  72 #    include <mach/vm_prot.h>
  73 #  endif
  74 #  if HAVE_SYS_SYSCTL_H
  75 #    include <sys/sysctl.h>
  76 #  endif
  77 /* #endif HAVE_THREAD_INFO */
  78
  79 #elif KERNEL_LINUX
  80 #  if HAVE_LINUX_CONFIG_H
  81 #    include <linux/config.h>
  82 #  endif
  83 #  ifndef CONFIG_HZ
  84 #    define CONFIG_HZ 100
  85 #  endif
  86 /* #endif KERNEL_LINUX */
  87
  88 #elif HAVE_LIBKVM_GETPROCS
  89 #  include <kvm.h>
  90 #  include <sys/user.h>
  91 #  include <sys/proc.h>
  92 #  if HAVE_SYS_SYSCTL_H
  93 #    include <sys/sysctl.h>
  94 #  endif
  95 /* #endif HAVE_LIBKVM_GETPROCS */
  96
  97 #else
  98 # error "No applicable input method."
  99 #endif
 100
 101 #if HAVE_REGEX_H
 102 # include <regex.h>
 103 #endif
 104
 105 #define BUFSIZE 256
 106
 107 static const char *config_keys[] =
 108 {
 109         "Process",
 110         "ProcessMatch",
 111         NULL
 112 };
 113 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
 114
 115 typedef struct procstat_entry_s
 116 {
 117         unsigned long id;
 118         unsigned long age;
 119
 120         unsigned long num_proc;
 121         unsigned long num_lwp;
 122         unsigned long vmem_rss;
 123
 124         unsigned long vmem_minflt;
 125         unsigned long vmem_majflt;
 126         unsigned long vmem_minflt_counter;
 127         unsigned long vmem_majflt_counter;
 128
 129         unsigned long cpu_user;
 130         unsigned long cpu_system;
 131         unsigned long cpu_user_counter;
 132         unsigned long cpu_system_counter;
 133
 134         struct procstat_entry_s *next;
 135 } procstat_entry_t;
 136
 137 #define PROCSTAT_NAME_LEN 256
 138 typedef struct procstat
 139 {
 140         char          name[PROCSTAT_NAME_LEN];
 141 #if HAVE_REGEX_H
 142         regex_t *re;
 143 #endif
 144
 145         unsigned long num_proc;
 146         unsigned long num_lwp;
 147         unsigned long vmem_rss;
 148
 149         unsigned long vmem_minflt_counter;
 150         unsigned long vmem_majflt_counter;
 151
 152         unsigned long cpu_user_counter;
 153         unsigned long cpu_system_counter;
 154
 155         struct procstat   *next;
 156         struct procstat_entry_s *instances;
 157 } procstat_t;
 158
 159 static procstat_t *list_head_g = NULL;
 160
 161 #if HAVE_THREAD_INFO
 162 static mach_port_t port_host_self;
 163 static mach_port_t port_task_self;
 164
 165 static processor_set_name_array_t pset_list;
 166 static mach_msg_type_number_t     pset_list_len;
 167 /* #endif HAVE_THREAD_INFO */
 168
 169 #elif KERNEL_LINUX
 170 static long pagesize_g;
 171 /* #endif KERNEL_LINUX */
 172
 173 #elif HAVE_LIBKVM_GETPROCS
 174 /* no global variables */
 175 #endif /* HAVE_LIBKVM_GETPROCS */
 176
 177 /* put name of process from config to list_head_g tree
 178    list_head_g is a list of 'procstat_t' structs with
 179    processes names we want to watch */
 180 static void ps_list_register (const char *name, const char *regexp)
 181 {
 182         procstat_t *new;
 183         procstat_t *ptr;
 184         int status;
 185
 186         new = (procstat_t *) malloc (sizeof (procstat_t));
 187         if (new == NULL)
 188         {
 189                 ERROR ("processes plugin: ps_list_register: malloc failed.");
 190                 return;
 191         }
 192         memset (new, 0, sizeof (procstat_t));
 193         sstrncpy (new->name, name, sizeof (new->name));
 194
 195 #if HAVE_REGEX_H
 196         if (regexp != NULL)
 197         {
 198                 DEBUG ("ProcessMatch: adding \"%s\" as criteria to process %s.", regexp, name);
 199                 new->re = (regex_t *) malloc (sizeof (regex_t));
 200                 if (new->re == NULL)
 201                 {
 202                         ERROR ("processes plugin: ps_list_register: malloc failed.");
 203                         sfree (new);
 204                         return;
 205                 }
 206
 207                 status = regcomp (new->re, regexp, REG_EXTENDED | REG_NOSUB);
 208                 if (status != 0)
 209                 {
 210                         DEBUG ("ProcessMatch: compiling the regular expression \"%s\" failed.", regexp);
 211                         sfree(new->re);
 212                         return;
 213                 }
 214         }
 215 #else
 216         if (regexp != NULL)
 217         {
 218                 ERROR ("processes plugin: ps_list_register: "
 219                                 "Regular expression \"%s\" found in config "
 220                                 "file, but support for regular expressions "
 221                                 "has been dispabled at compile time.",
 222                                 regexp);
 223                 sfree (new);
 224                 return;
 225         }
 226 #endif
 227
 228         for (ptr = list_head_g; ptr != NULL; ptr = ptr->next)
 229         {
 230                 if (strcmp (ptr->name, name) == 0)
 231                 {
 232                         WARNING ("processes plugin: You have configured more "
 233                                         "than one `Process' or "
 234                                         "`ProcessMatch' with the same name. "
 235                                         "All but the first setting will be "
 236                                         "ignored.");
 237                         sfree (new->re);
 238                         sfree (new);
 239                         return;
 240                 }
 241
 242                 if (ptr->next == NULL)
 243                         break;
 244         }
 245
 246         if (ptr == NULL)
 247                 list_head_g = new;
 248         else
 249                 ptr->next = new;
 250 } /* void ps_list_register */
 251
 252 /* try to match name against entry, returns 1 if success */
 253 static int ps_list_match (const char *name, const char *cmdline, procstat_t *ps)
 254 {
 255 #if HAVE_REGEX_H
 256         if (ps->re != NULL)
 257         {
 258                 int status;
 259                 const char *str;
 260
 261                 str = cmdline;
 262                 if ((str == NULL) || (str[0] == 0))
 263                         str = name;
 264
 265                 assert (str != NULL);
 266
 267                 status = regexec (ps->re, str,
 268                                 /* nmatch = */ 0,
 269                                 /* pmatch = */ NULL,
 270                                 /* eflags = */ 0);
 271                 if (status == 0)
 272                         return (1);
 273         }
 274         else
 275 #endif
 276         if (strcmp (ps->name, name) == 0)
 277                 return (1);
 278
 279         return (0);
 280 } /* int ps_list_match */
 281
 282 /* add process entry to 'instances' of process 'name' (or refresh it) */
 283 static void ps_list_add (const char *name, const char *cmdline, procstat_entry_t *entry)
 284 {
 285         procstat_t *ps;
 286         procstat_entry_t *pse;
 287
 288         if (entry->id == 0)
 289                 return;
 290
 291         for (ps = list_head_g; ps != NULL; ps = ps->next)
 292         {
 293                 if ((ps_list_match (name, cmdline, ps)) == 0)
 294                         continue;
 295
 296                 for (pse = ps->instances; pse != NULL; pse = pse->next)
 297                         if ((pse->id == entry->id) || (pse->next == NULL))
 298                                 break;
 299
 300                 if ((pse == NULL) || (pse->id != entry->id))
 301                 {
 302                         procstat_entry_t *new;
 303
 304                         new = (procstat_entry_t *) malloc (sizeof (procstat_entry_t));
 305                         if (new == NULL)
 306                                 return;
 307                         memset (new, 0, sizeof (procstat_entry_t));
 308                         new->id = entry->id;
 309
 310                         if (pse == NULL)
 311                                 ps->instances = new;
 312                         else
 313                                 pse->next = new;
 314
 315                         pse = new;
 316                 }
 317
 318                 pse->age = 0;
 319                 pse->num_proc = entry->num_proc;
 320                 pse->num_lwp  = entry->num_lwp;
 321                 pse->vmem_rss = entry->vmem_rss;
 322
 323                 ps->num_proc += pse->num_proc;
 324                 ps->num_lwp  += pse->num_lwp;
 325                 ps->vmem_rss += pse->vmem_rss;
 326
 327                 if ((entry->vmem_minflt_counter == 0)
 328                                 && (entry->vmem_majflt_counter == 0))
 329                 {
 330                         pse->vmem_minflt_counter += entry->vmem_minflt;
 331                         pse->vmem_minflt = entry->vmem_minflt;
 332
 333                         pse->vmem_majflt_counter += entry->vmem_majflt;
 334                         pse->vmem_majflt = entry->vmem_majflt;
 335                 }
 336                 else
 337                 {
 338                         if (entry->vmem_minflt_counter < pse->vmem_minflt_counter)
 339                         {
 340                                 pse->vmem_minflt = entry->vmem_minflt_counter
 341                                         + (ULONG_MAX - pse->vmem_minflt_counter);
 342                         }
 343                         else
 344                         {
 345                                 pse->vmem_minflt = entry->vmem_minflt_counter - pse->vmem_minflt_counter;
 346                         }
 347                         pse->vmem_minflt_counter = entry->vmem_minflt_counter;
 348
 349                         if (entry->vmem_majflt_counter < pse->vmem_majflt_counter)
 350                         {
 351                                 pse->vmem_majflt = entry->vmem_majflt_counter
 352                                         + (ULONG_MAX - pse->vmem_majflt_counter);
 353                         }
 354                         else
 355                         {
 356                                 pse->vmem_majflt = entry->vmem_majflt_counter - pse->vmem_majflt_counter;
 357                         }
 358                         pse->vmem_majflt_counter = entry->vmem_majflt_counter;
 359                 }
 360
 361                 ps->vmem_minflt_counter += pse->vmem_minflt;
 362                 ps->vmem_majflt_counter += pse->vmem_majflt;
 363
 364                 if ((entry->cpu_user_counter == 0)
 365                                 && (entry->cpu_system_counter == 0))
 366                 {
 367                         pse->cpu_user_counter += entry->cpu_user;
 368                         pse->cpu_user = entry->cpu_user;
 369
 370                         pse->cpu_system_counter += entry->cpu_system;
 371                         pse->cpu_system = entry->cpu_system;
 372                 }
 373                 else
 374                 {
 375                         if (entry->cpu_user_counter < pse->cpu_user_counter)
 376                         {
 377                                 pse->cpu_user = entry->cpu_user_counter
 378                                         + (ULONG_MAX - pse->cpu_user_counter);
 379                         }
 380                         else
 381                         {
 382                                 pse->cpu_user = entry->cpu_user_counter - pse->cpu_user_counter;
 383                         }
 384                         pse->cpu_user_counter = entry->cpu_user_counter;
 385
 386                         if (entry->cpu_system_counter < pse->cpu_system_counter)
 387                         {
 388                                 pse->cpu_system = entry->cpu_system_counter
 389                                         + (ULONG_MAX - pse->cpu_system_counter);
 390                         }
 391                         else
 392                         {
 393                                 pse->cpu_system = entry->cpu_system_counter - pse->cpu_system_counter;
 394                         }
 395                         pse->cpu_system_counter = entry->cpu_system_counter;
 396                 }
 397
 398                 ps->cpu_user_counter   += pse->cpu_user;
 399                 ps->cpu_system_counter += pse->cpu_system;
 400         }
 401 }
 402
 403 /* remove old entries from instances of processes in list_head_g */
 404 static void ps_list_reset (void)
 405 {
 406         procstat_t *ps;
 407         procstat_entry_t *pse;
 408         procstat_entry_t *pse_prev;
 409
 410         for (ps = list_head_g; ps != NULL; ps = ps->next)
 411         {
 412                 ps->num_proc    = 0;
 413                 ps->num_lwp     = 0;
 414                 ps->vmem_rss    = 0;
 415
 416                 pse_prev = NULL;
 417                 pse = ps->instances;
 418                 while (pse != NULL)
 419                 {
 420                         if (pse->age > 10)
 421                         {
 422                                 DEBUG ("Removing this procstat entry cause it's too old: "
 423                                                 "id = %lu; name = %s;",
 424                                                 pse->id, ps->name);
 425
 426                                 if (pse_prev == NULL)
 427                                 {
 428                                         ps->instances = pse->next;
 429                                         free (pse);
 430                                         pse = ps->instances;
 431                                 }
 432                                 else
 433                                 {
 434                                         pse_prev->next = pse->next;
 435                                         free (pse);
 436                                         pse = pse_prev->next;
 437                                 }
 438                         }
 439                         else
 440                         {
 441                                 pse->age++;
 442                                 pse_prev = pse;
 443                                 pse = pse->next;
 444                         }
 445                 } /* while (pse != NULL) */
 446         } /* for (ps = list_head_g; ps != NULL; ps = ps->next) */
 447 }
 448
 449 /* put all pre-defined 'Process' names from config to list_head_g tree */
 450 static int ps_config (const char *key, const char *value)
 451 {
 452         if (strcasecmp (key, "Process") == 0)
 453         {
 454                 ps_list_register (value, NULL);
 455         }
 456         else if (strcasecmp (key, "ProcessMatch") == 0)
 457         {
 458                 char *new_val;
 459                 char *fields[3];
 460                 int fields_num;
 461
 462                 new_val = strdup (value);
 463                 if (new_val == NULL) {
 464                         ERROR ("processes plugin: strdup failed when processing "
 465                                         "`ProcessMatch %s'.", value);
 466                         return (1);
 467                 }
 468
 469                 fields_num = strsplit (new_val, fields,
 470                                 STATIC_ARRAY_SIZE (fields));
 471                 if (fields_num != 2)
 472                 {
 473                         ERROR ("processes plugin: `ProcessMatch' needs exactly "
 474                                         "two string arguments.");
 475                         sfree (new_val);
 476                         return (1);
 477                 }
 478                 ps_list_register (fields[0], fields[1]);
 479                 sfree (new_val);
 480         }
 481         else
 482         {
 483                 ERROR ("processes plugin: The `%s' configuration option is not "
 484                                 "understood and will be ignored.", key);
 485                 return (-1);
 486         }
 487
 488         return (0);
 489 }
 490
 491 static int ps_init (void)
 492 {
 493 #if HAVE_THREAD_INFO
 494         kern_return_t status;
 495
 496         port_host_self = mach_host_self ();
 497         port_task_self = mach_task_self ();
 498
 499         if (pset_list != NULL)
 500         {
 501                 vm_deallocate (port_task_self,
 502                                 (vm_address_t) pset_list,
 503                                 pset_list_len * sizeof (processor_set_t));
 504                 pset_list = NULL;
 505                 pset_list_len = 0;
 506         }
 507
 508         if ((status = host_processor_sets (port_host_self,
 509                                         &pset_list,
 510                                         &pset_list_len)) != KERN_SUCCESS)
 511         {
 512                 ERROR ("host_processor_sets failed: %s\n",
 513                                 mach_error_string (status));
 514                 pset_list = NULL;
 515                 pset_list_len = 0;
 516                 return (-1);
 517         }
 518 /* #endif HAVE_THREAD_INFO */
 519
 520 #elif KERNEL_LINUX
 521         pagesize_g = sysconf(_SC_PAGESIZE);
 522         DEBUG ("pagesize_g = %li; CONFIG_HZ = %i;",
 523                         pagesize_g, CONFIG_HZ);
 524 /* #endif KERNEL_LINUX */
 525
 526 #elif HAVE_LIBKVM_GETPROCS
 527 /* no initialization */
 528 #endif /* HAVE_LIBKVM_GETPROCS */
 529
 530         return (0);
 531 } /* int ps_init */
 532
 533 /* submit global state (e.g.: qty of zombies, running, etc..) */
 534 static void ps_submit_state (const char *state, double value)
 535 {
 536         value_t values[1];
 537         value_list_t vl = VALUE_LIST_INIT;
 538
 539         values[0].gauge = value;
 540
 541         vl.values = values;
 542         vl.values_len = 1;
 543         vl.time = time (NULL);
 544         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 545         sstrncpy (vl.plugin, "processes", sizeof (vl.plugin));
 546         sstrncpy (vl.plugin_instance, "", sizeof (vl.plugin_instance));
 547         sstrncpy (vl.type, "ps_state", sizeof (vl.type));
 548         sstrncpy (vl.type_instance, state, sizeof (vl.type_instance));
 549
 550         plugin_dispatch_values (&vl);
 551 }
 552
 553 /* submit info about specific process (e.g.: memory taken, cpu usage, etc..) */
 554 static void ps_submit_proc_list (procstat_t *ps)
 555 {
 556         value_t values[2];
 557         value_list_t vl = VALUE_LIST_INIT;
 558
 559         vl.values = values;
 560         vl.values_len = 2;
 561         vl.time = time (NULL);
 562         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 563         sstrncpy (vl.plugin, "processes", sizeof (vl.plugin));
 564         sstrncpy (vl.plugin_instance, ps->name, sizeof (vl.plugin_instance));
 565
 566         sstrncpy (vl.type, "ps_rss", sizeof (vl.type));
 567         vl.values[0].gauge = ps->vmem_rss;
 568         vl.values_len = 1;
 569         plugin_dispatch_values (&vl);
 570
 571         sstrncpy (vl.type, "ps_cputime", sizeof (vl.type));
 572         vl.values[0].counter = ps->cpu_user_counter;
 573         vl.values[1].counter = ps->cpu_system_counter;
 574         vl.values_len = 2;
 575         plugin_dispatch_values (&vl);
 576
 577         sstrncpy (vl.type, "ps_count", sizeof (vl.type));
 578         vl.values[0].gauge = ps->num_proc;
 579         vl.values[1].gauge = ps->num_lwp;
 580         vl.values_len = 2;
 581         plugin_dispatch_values (&vl);
 582
 583         sstrncpy (vl.type, "ps_pagefaults", sizeof (vl.type));
 584         vl.values[0].counter = ps->vmem_minflt_counter;
 585         vl.values[1].counter = ps->vmem_majflt_counter;
 586         vl.values_len = 2;
 587         plugin_dispatch_values (&vl);
 588
 589         DEBUG ("name = %s; num_proc = %lu; num_lwp = %lu; vmem_rss = %lu; "
 590                         "vmem_minflt_counter = %lu; vmem_majflt_counter = %lu; "
 591                         "cpu_user_counter = %lu; cpu_system_counter = %lu;",
 592                         ps->name, ps->num_proc, ps->num_lwp, ps->vmem_rss,
 593                         ps->vmem_minflt_counter, ps->vmem_majflt_counter,
 594                         ps->cpu_user_counter, ps->cpu_system_counter);
 595 } /* void ps_submit_proc_list */
 596
 597 /* ------- additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
 598 #if KERNEL_LINUX
 599 static int *ps_read_tasks (int pid)
 600 {
 601         int *list = NULL;
 602         int  list_size = 1; /* size of allocated space, in elements */
 603         int  list_len = 0;  /* number of currently used elements */
 604
 605         char           dirname[64];
 606         DIR           *dh;
 607         struct dirent *ent;
 608
 609         ssnprintf (dirname, sizeof (dirname), "/proc/%i/task", pid);
 610
 611         if ((dh = opendir (dirname)) == NULL)
 612         {
 613                 DEBUG ("Failed to open directory `%s'", dirname);
 614                 return (NULL);
 615         }
 616
 617         while ((ent = readdir (dh)) != NULL)
 618         {
 619                 if (!isdigit (ent->d_name[0]))
 620                         continue;
 621
 622                 if ((list_len + 1) >= list_size)
 623                 {
 624                         int *new_ptr;
 625                         int  new_size = 2 * list_size;
 626                         /* Comes in sizes: 2, 4, 8, 16, ... */
 627
 628                         new_ptr = (int *) realloc (list, (size_t) (sizeof (int) * new_size));
 629                         if (new_ptr == NULL)
 630                         {
 631                                 if (list != NULL)
 632                                         free (list);
 633                                 ERROR ("processes plugin: "
 634                                                 "Failed to allocate more memory.");
 635                                 return (NULL);
 636                         }
 637
 638                         list = new_ptr;
 639                         list_size = new_size;
 640
 641                         memset (list + list_len, 0, sizeof (int) * (list_size - list_len));
 642                 }
 643
 644                 list[list_len] = atoi (ent->d_name);
 645                 if (list[list_len] != 0)
 646                         list_len++;
 647         }
 648
 649         closedir (dh);
 650
 651         if (list_len == 0)
 652                 return (NULL);
 653
 654         assert (list_len < list_size);
 655         assert (list[list_len] == 0);
 656
 657         return (list);
 658 } /* int *ps_read_tasks */
 659
 660 int ps_read_process (int pid, procstat_t *ps, char *state)
 661 {
 662         char  filename[64];
 663         char  buffer[1024];
 664
 665         char *fields[64];
 666         char  fields_len;
 667
 668         int  *tasks;
 669         int   i;
 670
 671         int   ppid;
 672         int   name_len;
 673
 674         long long unsigned cpu_user_counter;
 675         long long unsigned cpu_system_counter;
 676         long long unsigned vmem_rss;
 677
 678         memset (ps, 0, sizeof (procstat_t));
 679
 680         ssnprintf (filename, sizeof (filename), "/proc/%i/stat", pid);
 681
 682         i = read_file_contents (filename, buffer, sizeof(buffer) - 1);
 683         if (i <= 0)
 684                 return (-1);
 685         buffer[i] = 0;
 686
 687         fields_len = strsplit (buffer, fields, 64);
 688         if (fields_len < 24)
 689         {
 690                 DEBUG ("processes plugin: ps_read_process (pid = %i):"
 691                                 " `%s' has only %i fields..",
 692                                 (int) pid, filename, fields_len);
 693                 return (-1);
 694         }
 695
 696         /* copy the name, strip brackets in the process */
 697         name_len = strlen (fields[1]) - 2;
 698         if ((fields[1][0] != '(') || (fields[1][name_len + 1] != ')'))
 699         {
 700                 DEBUG ("No brackets found in process name: `%s'", fields[1]);
 701                 return (-1);
 702         }
 703         fields[1] = fields[1] + 1;
 704         fields[1][name_len] = '\0';
 705         strncpy (ps->name, fields[1], PROCSTAT_NAME_LEN);
 706
 707         ppid = atoi (fields[3]);
 708
 709         *state = fields[2][0];
 710
 711         if (*state == 'Z')
 712         {
 713                 ps->num_lwp  = 0;
 714                 ps->num_proc = 0;
 715         }
 716         else if ((tasks = ps_read_tasks (pid)) == NULL)
 717         {
 718                 /* Kernel 2.4 or so */
 719                 ps->num_lwp  = 1;
 720                 ps->num_proc = 1;
 721         }
 722         else
 723         {
 724                 ps->num_lwp  = 0;
 725                 ps->num_proc = 1;
 726                 for (i = 0; tasks[i] != 0; i++)
 727                         ps->num_lwp++;
 728
 729                 free (tasks);
 730                 tasks = NULL;
 731         }
 732
 733         /* Leave the rest at zero if this is only a zombi */
 734         if (ps->num_proc == 0)
 735         {
 736                 DEBUG ("processes plugin: This is only a zombi: pid = %i; "
 737                                 "name = %s;", pid, ps->name);
 738                 return (0);
 739         }
 740
 741         cpu_user_counter   = atoll (fields[13]);
 742         cpu_system_counter = atoll (fields[14]);
 743         vmem_rss = atoll (fields[23]);
 744         ps->vmem_minflt_counter = atol (fields[9]);
 745         ps->vmem_majflt_counter = atol (fields[11]);
 746
 747         /* Convert jiffies to useconds */
 748         cpu_user_counter   = cpu_user_counter   * 1000000 / CONFIG_HZ;
 749         cpu_system_counter = cpu_system_counter * 1000000 / CONFIG_HZ;
 750         vmem_rss = vmem_rss * pagesize_g;
 751
 752         ps->cpu_user_counter = (unsigned long) cpu_user_counter;
 753         ps->cpu_system_counter = (unsigned long) cpu_system_counter;
 754         ps->vmem_rss = (unsigned long) vmem_rss;
 755
 756         /* success */
 757         return (0);
 758 } /* int ps_read_process (...) */
 759
 760 static char *ps_get_cmdline (pid_t pid, char *name, char *buf, size_t buf_len)
 761 {
 762         char  *buf_ptr;
 763         size_t len;
 764
 765         char file[PATH_MAX];
 766         int  fd;
 767
 768         size_t n;
 769
 770         if ((pid < 1) || (NULL == buf) || (buf_len < 2))
 771                 return NULL;
 772
 773         ssnprintf (file, sizeof (file), "/proc/%u/cmdline", pid);
 774
 775         fd = open (file, O_RDONLY);
 776         if (fd < 0) {
 777                 char errbuf[4096];
 778                 WARNING ("processes plugin: Failed to open `%s': %s.", file,
 779                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 780                 return NULL;
 781         }
 782
 783         buf_ptr = buf;
 784         len     = buf_len;
 785
 786         n = 0;
 787
 788         while (42) {
 789                 size_t status;
 790
 791                 status = read (fd, (void *)buf_ptr, len);
 792
 793                 if (status < 0) {
 794                         char errbuf[4096];
 795
 796                         if ((EAGAIN == errno) || (EINTR == errno))
 797                                 continue;
 798
 799                         WARNING ("processes plugin: Failed to read from `%s': %s.", file,
 800                                         sstrerror (errno, errbuf, sizeof (errbuf)));
 801                         close (fd);
 802                         return NULL;
 803                 }
 804
 805                 n += status;
 806
 807                 if (status == 0)
 808                         break;
 809
 810                 buf_ptr += status;
 811                 len     -= status;
 812
 813                 if (len <= 0)
 814                         break;
 815         }
 816
 817         close (fd);
 818
 819         if (0 == n) {
 820                 /* cmdline not available; e.g. kernel thread, zombie */
 821                 if (NULL == name)
 822                         return NULL;
 823
 824                 ssnprintf (buf, buf_len, "[%s]", name);
 825                 return buf;
 826         }
 827
 828         assert (n <= buf_len);
 829
 830         if (n == buf_len)
 831                 --n;
 832         buf[n] = '\0';
 833
 834         --n;
 835         /* remove trailing whitespace */
 836         while ((n > 0) && (isspace (buf[n]) || ('\0' == buf[n]))) {
 837                 buf[n] = '\0';
 838                 --n;
 839         }
 840
 841         /* arguments are separated by '\0' in /proc/<pid>/cmdline */
 842         while (n > 0) {
 843                 if ('\0' == buf[n])
 844                         buf[n] = ' ';
 845                 --n;
 846         }
 847         return buf;
 848 } /* char *ps_get_cmdline (...) */
 849 #endif /* KERNEL_LINUX */
 850
 851 #if HAVE_THREAD_INFO
 852 static int mach_get_task_name (task_t t, int *pid, char *name, size_t name_max_len)
 853 {
 854         int mib[4];
 855
 856         struct kinfo_proc kp;
 857         size_t            kp_size;
 858
 859         mib[0] = CTL_KERN;
 860         mib[1] = KERN_PROC;
 861         mib[2] = KERN_PROC_PID;
 862
 863         if (pid_for_task (t, pid) != KERN_SUCCESS)
 864                 return (-1);
 865         mib[3] = *pid;
 866
 867         kp_size = sizeof (kp);
 868         if (sysctl (mib, 4, &kp, &kp_size, NULL, 0) != 0)
 869                 return (-1);
 870
 871         if (name_max_len > (MAXCOMLEN + 1))
 872                 name_max_len = MAXCOMLEN + 1;
 873
 874         strncpy (name, kp.kp_proc.p_comm, name_max_len - 1);
 875         name[name_max_len - 1] = '\0';
 876
 877         DEBUG ("pid = %i; name = %s;", *pid, name);
 878
 879         /* We don't do the special handling for `p_comm == "LaunchCFMApp"' as
 880          * `top' does it, because it is a lot of work and only used when
 881          * debugging. -octo */
 882
 883         return (0);
 884 }
 885 #endif /* HAVE_THREAD_INFO */
 886 /* ------- end of additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
 887
 888 /* do actual readings from kernel */
 889 static int ps_read (void)
 890 {
 891 #if HAVE_THREAD_INFO
 892         kern_return_t            status;
 893
 894         int                      pset;
 895         processor_set_t          port_pset_priv;
 896
 897         int                      task;
 898         task_array_t             task_list;
 899         mach_msg_type_number_t   task_list_len;
 900
 901         int                      task_pid;
 902         char                     task_name[MAXCOMLEN + 1];
 903
 904         int                      thread;
 905         thread_act_array_t       thread_list;
 906         mach_msg_type_number_t   thread_list_len;
 907         thread_basic_info_data_t thread_data;
 908         mach_msg_type_number_t   thread_data_len;
 909
 910         int running  = 0;
 911         int sleeping = 0;
 912         int zombies  = 0;
 913         int stopped  = 0;
 914         int blocked  = 0;
 915
 916         procstat_t *ps;
 917         procstat_entry_t pse;
 918
 919         ps_list_reset ();
 920
 921         /*
 922          * The Mach-concept is a little different from the traditional UNIX
 923          * concept: All the work is done in threads. Threads are contained in
 924          * `tasks'. Therefore, `task status' doesn't make much sense, since
 925          * it's actually a `thread status'.
 926          * Tasks are assigned to sets of processors, so that's where you go to
 927          * get a list.
 928          */
 929         for (pset = 0; pset < pset_list_len; pset++)
 930         {
 931                 if ((status = host_processor_set_priv (port_host_self,
 932                                                 pset_list[pset],
 933                                                 &port_pset_priv)) != KERN_SUCCESS)
 934                 {
 935                         ERROR ("host_processor_set_priv failed: %s\n",
 936                                         mach_error_string (status));
 937                         continue;
 938                 }
 939
 940                 if ((status = processor_set_tasks (port_pset_priv,
 941                                                 &task_list,
 942                                                 &task_list_len)) != KERN_SUCCESS)
 943                 {
 944                         ERROR ("processor_set_tasks failed: %s\n",
 945                                         mach_error_string (status));
 946                         mach_port_deallocate (port_task_self, port_pset_priv);
 947                         continue;
 948                 }
 949
 950                 for (task = 0; task < task_list_len; task++)
 951                 {
 952                         ps = NULL;
 953                         if (mach_get_task_name (task_list[task],
 954                                                 &task_pid,
 955                                                 task_name, PROCSTAT_NAME_LEN) == 0)
 956                         {
 957                                 /* search for at least one match */
 958                                 for (ps = list_head_g; ps != NULL; ps = ps->next)
 959                                         /* FIXME: cmdline should be here instead of NULL */
 960                                         if (ps_list_match (task_name, NULL, ps) == 1)
 961                                                 break;
 962                         }
 963
 964                         /* Collect more detailed statistics for this process */
 965                         if (ps != NULL)
 966                         {
 967                                 task_basic_info_data_t        task_basic_info;
 968                                 mach_msg_type_number_t        task_basic_info_len;
 969                                 task_events_info_data_t       task_events_info;
 970                                 mach_msg_type_number_t        task_events_info_len;
 971                                 task_absolutetime_info_data_t task_absolutetime_info;
 972                                 mach_msg_type_number_t        task_absolutetime_info_len;
 973
 974                                 memset (&pse, '\0', sizeof (pse));
 975                                 pse.id = task_pid;
 976
 977                                 task_basic_info_len = TASK_BASIC_INFO_COUNT;
 978                                 status = task_info (task_list[task],
 979                                                 TASK_BASIC_INFO,
 980                                                 (task_info_t) &task_basic_info,
 981                                                 &task_basic_info_len);
 982                                 if (status != KERN_SUCCESS)
 983                                 {
 984                                         ERROR ("task_info failed: %s",
 985                                                         mach_error_string (status));
 986                                         continue; /* with next thread_list */
 987                                 }
 988
 989                                 task_events_info_len = TASK_EVENTS_INFO_COUNT;
 990                                 status = task_info (task_list[task],
 991                                                 TASK_EVENTS_INFO,
 992                                                 (task_info_t) &task_events_info,
 993                                                 &task_events_info_len);
 994                                 if (status != KERN_SUCCESS)
 995                                 {
 996                                         ERROR ("task_info failed: %s",
 997                                                         mach_error_string (status));
 998                                         continue; /* with next thread_list */
 999                                 }
1000
1001                                 task_absolutetime_info_len = TASK_ABSOLUTETIME_INFO_COUNT;
1002                                 status = task_info (task_list[task],
1003                                                 TASK_ABSOLUTETIME_INFO,
1004                                                 (task_info_t) &task_absolutetime_info,
1005                                                 &task_absolutetime_info_len);
1006                                 if (status != KERN_SUCCESS)
1007                                 {
1008                                         ERROR ("task_info failed: %s",
1009                                                         mach_error_string (status));
1010                                         continue; /* with next thread_list */
1011                                 }
1012
1013                                 pse.num_proc++;
1014                                 pse.vmem_rss = task_basic_info.resident_size;
1015
1016                                 pse.vmem_minflt_counter = task_events_info.cow_faults;
1017                                 pse.vmem_majflt_counter = task_events_info.faults;
1018
1019                                 pse.cpu_user_counter = task_absolutetime_info.total_user;
1020                                 pse.cpu_system_counter = task_absolutetime_info.total_system;
1021                         }
1022
1023                         status = task_threads (task_list[task], &thread_list,
1024                                         &thread_list_len);
1025                         if (status != KERN_SUCCESS)
1026                         {
1027                                 /* Apple's `top' treats this case a zombie. It
1028                                  * makes sense to some extend: A `zombie'
1029                                  * thread is nonsense, since the task/process
1030                                  * is dead. */
1031                                 zombies++;
1032                                 DEBUG ("task_threads failed: %s",
1033                                                 mach_error_string (status));
1034                                 if (task_list[task] != port_task_self)
1035                                         mach_port_deallocate (port_task_self,
1036                                                         task_list[task]);
1037                                 continue; /* with next task_list */
1038                         }
1039
1040                         for (thread = 0; thread < thread_list_len; thread++)
1041                         {
1042                                 thread_data_len = THREAD_BASIC_INFO_COUNT;
1043                                 status = thread_info (thread_list[thread],
1044                                                 THREAD_BASIC_INFO,
1045                                                 (thread_info_t) &thread_data,
1046                                                 &thread_data_len);
1047                                 if (status != KERN_SUCCESS)
1048                                 {
1049                                         ERROR ("thread_info failed: %s",
1050                                                         mach_error_string (status));
1051                                         if (task_list[task] != port_task_self)
1052                                                 mach_port_deallocate (port_task_self,
1053                                                                 thread_list[thread]);
1054                                         continue; /* with next thread_list */
1055                                 }
1056
1057                                 if (ps != NULL)
1058                                         pse.num_lwp++;
1059
1060                                 switch (thread_data.run_state)
1061                                 {
1062                                         case TH_STATE_RUNNING:
1063                                                 running++;
1064                                                 break;
1065                                         case TH_STATE_STOPPED:
1066                                         /* What exactly is `halted'? */
1067                                         case TH_STATE_HALTED:
1068                                                 stopped++;
1069                                                 break;
1070                                         case TH_STATE_WAITING:
1071                                                 sleeping++;
1072                                                 break;
1073                                         case TH_STATE_UNINTERRUPTIBLE:
1074                                                 blocked++;
1075                                                 break;
1076                                         /* There is no `zombie' case here,
1077                                          * since there are no zombie-threads.
1078                                          * There's only zombie tasks, which are
1079                                          * handled above. */
1080                                         default:
1081                                                 WARNING ("Unknown thread status: %i",
1082                                                                 thread_data.run_state);
1083                                                 break;
1084                                 } /* switch (thread_data.run_state) */
1085
1086                                 if (task_list[task] != port_task_self)
1087                                 {
1088                                         status = mach_port_deallocate (port_task_self,
1089                                                         thread_list[thread]);
1090                                         if (status != KERN_SUCCESS)
1091                                                 ERROR ("mach_port_deallocate failed: %s",
1092                                                                 mach_error_string (status));
1093                                 }
1094                         } /* for (thread_list) */
1095
1096                         if ((status = vm_deallocate (port_task_self,
1097                                                         (vm_address_t) thread_list,
1098                                                         thread_list_len * sizeof (thread_act_t)))
1099                                         != KERN_SUCCESS)
1100                         {
1101                                 ERROR ("vm_deallocate failed: %s",
1102                                                 mach_error_string (status));
1103                         }
1104                         thread_list = NULL;
1105                         thread_list_len = 0;
1106
1107                         /* Only deallocate the task port, if it isn't our own.
1108                          * Don't know what would happen in that case, but this
1109                          * is what Apple's top does.. ;) */
1110                         if (task_list[task] != port_task_self)
1111                         {
1112                                 status = mach_port_deallocate (port_task_self,
1113                                                 task_list[task]);
1114                                 if (status != KERN_SUCCESS)
1115                                         ERROR ("mach_port_deallocate failed: %s",
1116                                                         mach_error_string (status));
1117                         }
1118
1119                         if (ps != NULL)
1120                                 /* FIXME: cmdline should be here instead of NULL */
1121                                 ps_list_add (task_name, NULL, &pse);
1122                 } /* for (task_list) */
1123
1124                 if ((status = vm_deallocate (port_task_self,
1125                                 (vm_address_t) task_list,
1126                                 task_list_len * sizeof (task_t))) != KERN_SUCCESS)
1127                 {
1128                         ERROR ("vm_deallocate failed: %s",
1129                                         mach_error_string (status));
1130                 }
1131                 task_list = NULL;
1132                 task_list_len = 0;
1133
1134                 if ((status = mach_port_deallocate (port_task_self, port_pset_priv))
1135                                 != KERN_SUCCESS)
1136                 {
1137                         ERROR ("mach_port_deallocate failed: %s",
1138                                         mach_error_string (status));
1139                 }
1140         } /* for (pset_list) */
1141
1142         ps_submit_state ("running", running);
1143         ps_submit_state ("sleeping", sleeping);
1144         ps_submit_state ("zombies", zombies);
1145         ps_submit_state ("stopped", stopped);
1146         ps_submit_state ("blocked", blocked);
1147
1148         for (ps = list_head_g; ps != NULL; ps = ps->next)
1149                 ps_submit_proc_list (ps);
1150 /* #endif HAVE_THREAD_INFO */
1151
1152 #elif KERNEL_LINUX
1153         int running  = 0;
1154         int sleeping = 0;
1155         int zombies  = 0;
1156         int stopped  = 0;
1157         int paging   = 0;
1158         int blocked  = 0;
1159
1160         struct dirent *ent;
1161         DIR           *proc;
1162         int            pid;
1163
1164         char cmdline[ARG_MAX];
1165
1166         int        status;
1167         procstat_t ps;
1168         procstat_entry_t pse;
1169         char       state;
1170
1171         procstat_t *ps_ptr;
1172
1173         running = sleeping = zombies = stopped = paging = blocked = 0;
1174         ps_list_reset ();
1175
1176         if ((proc = opendir ("/proc")) == NULL)
1177         {
1178                 char errbuf[1024];
1179                 ERROR ("Cannot open `/proc': %s",
1180                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1181                 return (-1);
1182         }
1183
1184         while ((ent = readdir (proc)) != NULL)
1185         {
1186                 if (!isdigit (ent->d_name[0]))
1187                         continue;
1188
1189                 if ((pid = atoi (ent->d_name)) < 1)
1190                         continue;
1191
1192                 status = ps_read_process (pid, &ps, &state);
1193                 if (status != 0)
1194                 {
1195                         DEBUG ("ps_read_process failed: %i", status);
1196                         continue;
1197                 }
1198
1199                 pse.id       = pid;
1200                 pse.age      = 0;
1201
1202                 pse.num_proc = ps.num_proc;
1203                 pse.num_lwp  = ps.num_lwp;
1204                 pse.vmem_rss = ps.vmem_rss;
1205
1206                 pse.vmem_minflt = 0;
1207                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
1208                 pse.vmem_majflt = 0;
1209                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
1210
1211                 pse.cpu_user = 0;
1212                 pse.cpu_user_counter = ps.cpu_user_counter;
1213                 pse.cpu_system = 0;
1214                 pse.cpu_system_counter = ps.cpu_system_counter;
1215
1216                 switch (state)
1217                 {
1218                         case 'R': running++;  break;
1219                         case 'S': sleeping++; break;
1220                         case 'D': blocked++;  break;
1221                         case 'Z': zombies++;  break;
1222                         case 'T': stopped++;  break;
1223                         case 'W': paging++;   break;
1224                 }
1225
1226                 ps_list_add (ps.name,
1227                                 ps_get_cmdline (pid, ps.name, cmdline, sizeof (cmdline)),
1228                                 &pse);
1229         }
1230
1231         closedir (proc);
1232
1233         ps_submit_state ("running",  running);
1234         ps_submit_state ("sleeping", sleeping);
1235         ps_submit_state ("zombies",  zombies);
1236         ps_submit_state ("stopped",  stopped);
1237         ps_submit_state ("paging",   paging);
1238         ps_submit_state ("blocked",  blocked);
1239
1240         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1241                 ps_submit_proc_list (ps_ptr);
1242 /* #endif KERNEL_LINUX */
1243
1244 #elif HAVE_LIBKVM_GETPROCS
1245         int running  = 0;
1246         int sleeping = 0;
1247         int zombies  = 0;
1248         int stopped  = 0;
1249         int blocked  = 0;
1250         int idle     = 0;
1251         int wait     = 0;
1252
1253         kvm_t *kd;
1254         char errbuf[1024];
1255         char cmdline[ARG_MAX];
1256         char *cmdline_ptr;
1257         struct kinfo_proc *procs;          /* array of processes */
1258         char **argv;
1259         int count;                         /* returns number of processes */
1260         int i;
1261
1262         procstat_t *ps_ptr;
1263         procstat_entry_t pse;
1264
1265         ps_list_reset ();
1266
1267         /* Open the kvm interface, get a descriptor */
1268         kd = kvm_open (NULL, NULL, NULL, 0, errbuf);
1269         if (kd == NULL)
1270         {
1271                 ERROR ("processes plugin: Cannot open kvm interface: %s",
1272                                 errbuf);
1273                 return (0);
1274         }
1275
1276         /* Get the list of processes. */
1277         procs = kvm_getprocs(kd, KERN_PROC_ALL, 0, &count);
1278         if (procs == NULL)
1279         {
1280                 kvm_close (kd);
1281                 ERROR ("processes plugin: Cannot get kvm processes list: %s",
1282                                 kvm_geterr(kd));
1283                 return (0);
1284         }
1285
1286         /* Iterate through the processes in kinfo_proc */
1287         for (i = 0; i < count; i++)
1288         {
1289                 /* retrieve the arguments */
1290                 cmdline[0] = 0;
1291                 cmdline_ptr = NULL;
1292
1293                 argv = kvm_getargv (kd, (const struct kinfo_proc *) &(procs[i]), 0);
1294                 if (argv != NULL)
1295                 {
1296                         int status;
1297                         int argc;
1298
1299                         argc = 0;
1300                         while (argv[argc] != NULL)
1301                                 argc++;
1302
1303                         status = strjoin (cmdline, sizeof (cmdline),
1304                                         argv, argc, " ");
1305
1306                         if (status < 0)
1307                         {
1308                                 WARNING ("processes plugin: Command line did "
1309                                                 "not fit into buffer.");
1310                         }
1311                         else
1312                         {
1313                                 cmdline_ptr = &cmdline[0];
1314                         }
1315                 }
1316
1317                 pse.id       = procs[i].ki_pid;
1318                 pse.age      = 0;
1319
1320                 pse.num_proc = 1;
1321                 pse.num_lwp  = procs[i].ki_numthreads;
1322
1323                 pse.vmem_rss = procs[i].ki_rssize * getpagesize();
1324                 pse.vmem_minflt = 0;
1325                 pse.vmem_minflt_counter = procs[i].ki_rusage.ru_minflt;
1326                 pse.vmem_majflt = 0;
1327                 pse.vmem_majflt_counter = procs[i].ki_rusage.ru_majflt;
1328
1329                 pse.cpu_user = 0;
1330                 pse.cpu_user_counter = procs[i].ki_rusage.ru_utime.tv_sec
1331                         * 1000
1332                         + procs[i].ki_rusage.ru_utime.tv_usec;
1333                 pse.cpu_system = 0;
1334                 pse.cpu_system_counter = procs[i].ki_rusage.ru_stime.tv_sec
1335                         * 1000
1336                         + procs[i].ki_rusage.ru_stime.tv_usec;
1337
1338                 switch (procs[i].ki_stat)
1339                 {
1340                         case SSTOP:     stopped++;      break;
1341                         case SSLEEP:    sleeping++;     break;
1342                         case SRUN:      running++;      break;
1343                         case SIDL:      idle++;         break;
1344                         case SWAIT:     wait++;         break;
1345                         case SLOCK:     blocked++;      break;
1346                         case SZOMB:     zombies++;      break;
1347                 }
1348
1349                 ps_list_add (procs[i].ki_comm, cmdline_ptr, &pse);
1350         }
1351
1352         kvm_close(kd);
1353
1354         ps_submit_state ("running",  running);
1355         ps_submit_state ("sleeping", sleeping);
1356         ps_submit_state ("zombies",  zombies);
1357         ps_submit_state ("stopped",  stopped);
1358         ps_submit_state ("blocked",  blocked);
1359         ps_submit_state ("idle",     idle);
1360         ps_submit_state ("wait",     wait);
1361
1362         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1363                 ps_submit_proc_list (ps_ptr);
1364 #endif /* HAVE_LIBKVM_GETPROCS */
1365
1366         return (0);
1367 } /* int ps_read */
1368
1369 void module_register (void)
1370 {
1371         plugin_register_config ("processes", ps_config,
1372                         config_keys, config_keys_num);
1373         plugin_register_init ("processes", ps_init);
1374         plugin_register_read ("processes", ps_read);
1375 } /* void module_register */